MIR Smart ONE | Personal Pocket Spirometer | Peak Flow (PEF) and FEV1

Works great. Easy, app works well and is easy to use.

This product is fantastically portable and seems to be accurate. I was checking how my daily inhaler affected/improved my lung capacity in the morning and at night -- it is great to be able to track your trigger days and symptoms. I was able to find that my asthma affected my breathing most in the mornings, before I took my maintenance inhaler. I appreciate that the app walks you through the process and recommends your exhale slower or faster, depending on your tendency. Note: It does take the highest of three measurements and saves that number.With all that being said, I bought it to help me track whether my medication was actually helping my lung function or not. It gave me a lot of relief that, even when I felt like I was having an asthma flare, my lung function was still generally good.It is worth it for the peace of mind!My only complaint is that I wish the mouthpiece was collapsible. For some reason, I assumed it was, based off of the product photos, and was disappointed to see that it wasn't. In reality, that is a very small quirk to an otherwise sleekly designed piece of medical equipment.

If you’re interested in tracking your FEV & PEF this is a very helpful and user friendly tool to do so. Cool product, works great, connected to my iPhone flawlessly. Proud to add this tool to my health tech arsenal! The only reason I give it 4/5 is because the companion app could use a little bit of improvement. Very solid product!

Can't believe I didn't rate this, purchased September 2022 and use it every day (morning and night). Great Iphone app, zero connectivity problems, and the instrument itself still functions perfectly. I would definitely recommend and certainly will buy another if this one ever fails.

I love this product because it allows me to keep track of my peak flow and FEV1. It is accurate. (I had testing done the same day I got mine in the mail!) It's very easy to use. My pulmonologist suggested this to use a few times a week between my doctors appointments. It doesn't take the place of the pulmonary testing that is done in the clinic but it definitely helps to gage my breathing. It allows my doctor to help monitor me better. The app is free and I can track my symptoms as well as put notes in each time I test. It creates a shareable PDF chart/graph which I can send to my doctor. I'm very impressed and thankful for an affordable price tag!

Unable to BUDGE the battery cover to install the batteries, and no amount of prying will open it. USELESS. Btw thanks for all the non-helpful answers people, I know where the battery door is and how to work it, it does not open! Called the company and they said they will send me a replacement but it wasn’t a new complaint. So they know about this design flaw and sell it anyway for 130 bucks! Will update my review once I can actually try it!

Out of the box to testing in about 5 minutes! The readings are accurate- if only relatively speaking. When I'm open it's high and when I'm plugged up it's low.I'll take it to my next pulmonologist appointment to compare, if possible.I love the fact that it's Bluetooth and the ease of use.I wish someone would come up with a (home) Bluetooth blood pressure cuff, pulse oximeter breathing analyzer, and perhaps a thermometer..I've got them all except the thermometer BUT each runs on its own app. I see this sensor I just bought now comes with a pulse oximeter.Who knew COPD would have a fun edge to it?

I've been using the MIR Smart One for a few years. I find that the components lasts for about a year, which I understand (it's plastic, the turbine wears out, etc.). When my last one went off, I bought another, and ended up returning it because there were obvious manufacturing defects (rough edges around the mouthpiece and turbine). Since then, I've ordered three more and have had issues with each one--crazy readings (one very high, one extremely low, one middling), parts not fitting correctly, and more. Also, I'm having difficulty with the app (which is nice, although if you have to reload it, all your data is lost, and it should be migrated)--when I blow, the indicators stick, and I have to pound on the phone screen so I can do another test. I've never had these difficulties in the past and, taken together, suggest to me that quality control is lacking. I've been faithful to the MIR, but given these issues (with FOUR new devices received over a period of a few months), I'm afraid I'll have to abandon it for another brand. Disappointing.